I also prefer the Cobra line. I liked the Super Plush 600s when they were a 70/30 blend, the 5% difference is really noticeable on the ones I recently bought. I still use the 530's, Gold Plush and the Big Blue drying towels.
Chemical Guys MFs are pretty good, in general. I been using their Monster Extreme Thickness which used to be a 70 /30 blend and 550 g/m, Ultra Plush Super Premium also supposedly 70/30 (not sure of thickness) and the Microfiber Max 2-Faced Soft Touch also 70/30. These are pretty good in quality but not on an equal par with the Cobra line IMO. I've noticed recently, that CG has taken the thickness of many or all of their MFs off their web site. I'm going to stay away from commenting on their web site as I bought from their warehouse.